.clear::after,
.clear::before {
  display: table;
  content: '';
}

.clear::after {
  clear: both;
}

* {
  margin: 0;
  padding: 0;
}

ul,
li {
  list-style: none;
}

a {
  text-decoration: none;
  color: #ac1010;
}

.center {
  width: 800px;
  margin-left: auto;
  margin-right: auto;
}